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arXiv · 1103.5984

Regge-like quark-antiquark excitations in the effective-action formalism

D. Antonov·J. E. F. T. Ribeiro
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Abstract

Radial excitations of the quark-antiquark string sweeping the Wilson-loop area are considered in the framework of the effective-action formalism. Identifying these excitations with the daughter Regge trajectories, we find corrections which they produce to the constituent quark mass. The energy of the quark-antiquark pair turns out to be mostly saturated by the constituent quark masses, rather than by the elongation of the quark-antiquark string. Specifically, while the constituent quark mass turns out to increase as the square root of the radial-excitation quantum number, the energy of the string increases only as the fourth root of that number.

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D. Antonov, J. E. F. T. Ribeiro. 2012-01-04. Regge-like quark-antiquark excitations in the effective-action formalism. https://arxiv.org/abs/1103.5984

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